Volume deformations in grid-less flow simulations

Authors:
Harald Obermaier;Martin Hering-Bertram;Jörg Kuhnert;Hans Hagen
Affiliations:
TU Kaiserslautern and Fraunhofer ITWM, Kaiserslautern, Germany;Fraunhofer ITWM, Kaiserslautern, Germany;Fraunhofer ITWM, Kaiserslautern, Germany;TU Kaiserslautern, Germany
Venue:
EuroVis'09 Proceedings of the 11th Eurographics / IEEE - VGTC conference on Visualization
Year:
2009

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Abstract

This paper presents a novel method for the extraction and visualization of volume deformations in grid-less point based flow simulations. Our primary goals are the segmentation of different paths through a mixing device and the visualization of ellipsoidal particle deformations. The main challenges are the numerically efficient processing of deformation tensors and the robust integration of stream- and streaklines at boundaries of the dataset such that closed segments are obtained. Our results show two- and three-dimensional particle deformations as well as the segmentation of volumes in stationary fields and areas in time-dependent datasets taking consistent paths through a mixing device.